Background Image
Previous Page  6 / 44 Next Page
Information
Show Menu
Previous Page 6 / 44 Next Page
Page Background

One of Hillary Construction’s Cat 140K motor graders working on a new

dual carriageway section outside Kroonstad. This is a green field project

in the sense that construction of the southbound carriageway is to be

built on virgin land adjacent to the N1.

CAPITAL EQUIPMENT NEWS

JULY 2015

4

In terms of quantities on the Holfontein to

Kroonstad route, there will be approximately

one million cubic metres of bulk earthworks;

590 000 m

³

of gravel layer work; 82 000 m

³

of G1 base course; 300 000 tonnes of G4 for

the sub-base; and 530 000 m

²

of asphalt

surfacing. UTFC will also be the final layer on

this section.

All road materials (G4 sub-base, G1 base

course, plus asphalt and concrete aggre-

gates) for the various project phases will be

sourced from a Ventersburg quarry pit des-

ignated by SANRAL and managed by a sep-

arate contractor.

“The SANRAL specification stipulates that a

40 % RA be incorporated in the new asphalt

composition laid,” explains Hillary Construc-

tion’s managing director, Trevor Freestone.

“In other words, 40% of the existing as-

phalt will be milled, crushed, screened and

recycled to enable a sustainable pavement

solution.” RA screening and crushing will be

carried out by Hillary.

Aggregate and asphalt materials will be

hauled by a newly acquired fleet of ten 8 x 4

on-highway trucks linked to 3 axle pup trail-

ers. These truck acquisitions form part of an

approximately R75 m investment in capital

equipment that includes the new asphalt plant

on site.

Earthmoving plant deployed includes two lat-

est generation CAT 950 GC medium wheel

loaders supplied and supported by southern

African CAT dealer, Barloworld Equipment.

One of the CAT 950 GC units is assigned to

Polokwane Surfacing’s asphalt manufacturing

P

olokwane based contractor, Hillary Con-

struction, is forging ahead on a range of

multi-disciplinary contracts nationally,

which include two major Free State projects

with a combined value of around R720 m.

Work is now underway on a South African

National Roads Agency (SANRAL) project on

the N1 (Section 17) heading north from the

Holfontein interchange (Km 24) to Kroonstad

(Km 45). The contract commenced from Feb-

ruary 2015, with a scheduled completion date

of February 2018. The project value is approx-

imately R560 m.

This multi-faceted construction programme

was awarded to Polokwane based company,

Hillary Construction, which will be responsible

for all phases, from bridge and culvert devel-

opment, to the final riding surface. There are

three bridges involved along this route that will

need to be rebuilt, including one over the Blo-

emspruit, as well as a road-over-rail bridge.

The project entails the creation of a dual car-

riageway between Ventersburg and Kroons-

tad. This is a green field project in the sense

that construction of the southbound carriage-

way is to be constructed on virgin land adja-

cent to the N1. Once completed, traffic will be

diverted onto the new roadway and thereafter

full reconstruction will take place on the ex-

isting N1 pavement, which will become the

northbound carriageway.

Running in parallel as part of the over-

all work package is an 18 month SANRAL

contract, valued at around R160 m, which

commenced in February 2015 and has also

been awarded to Hillary Construction. The

scope here covers the Kroonstad to Westle-

igh section and includes the rehabilitation of

the Kroonstad bypass.

This project will involve some 60 000 m

³

of

recycled sub-base. Meanwhile, pavement sur-

facing quantities include 170 000 m

²

of BTB

(Bitumen Treated Base), followed by 23 000

tonnes of medium grade asphalt, and a final

295 000 m

²

layer of Ultra Thin Friction Coarse

(UTFC). All asphalt phases will be carried out

by Hillary Construction subsidiary, Polokwane

Surfacing.

Key benefits of using UTFC include less traf-

fic noise, and improved rideability since this

is a porous asphalt proven to be safer in wet

weather as it improves skid resistance.

CONSTRUCTING

SAFER TRANSIT

ROUTES